Cushion pad for backpacks

ABSTRACT

Disclosed herein is a cushion pad for backpacks. In the cushion pad of the present invention, a net fabric is provided on a portion of each of the backpad and the shoulder straps which are in close contact with the back and shoulder of a user. Furthermore, the cushion pad includes a porous filter which is placed inside the net fabric to dissipate heat to the atmosphere, and a sheet which is made of a material such as polyurethane and layered on a surface of the porous filter. The sheet is inserted along with the porous filter into a space defined between the net fabric and the cloth of the backpack. As such, the cushion pad having the above-mentioned structure provides superior ventilation and elasticity to the backpad and the shoulder straps of the backpack. In addition, the cushion pad of the present invention is lighter than conventional pads and has superior ventilation, thus preventing the backpack from being soaked with sweat, thereby being pleasant to the user who carries the backpack on his/her back.

This application claims priority of pending Korean Patent Application No. 2004-0007843 filed on Mar. 22, 2004.

FIELD OF THE INVENTION

The present invention relates generally to cushion pads used in backpads and shoulder straps of backpacks and, more particularly, to a cushion pad for backpacks which is provided in each of a backpad and a shoulder strap of a backpack and is made of a material that is lightweight and has superior ventilation, thus allowing a user to carry the backpack on his/her back more comfortably.

DESCRIPTION OF THE RELATED ART

Generally, backpacks contain various objects therein and allow users to conveniently carry them during leisure activities such as mountain climbing. As shown in FIG. 1, such a backpack 104 includes a backpack body 101 to contain objects therein, a backpad 102 which is provided on a backpack body 101 to be in close contact with the back of a user, and a pair of shoulder straps 103 which is coupled to the backpack body 101 to allow the user to carry the backpack on his/her shoulders.

Furthermore, a pad 105 is provided on each of the backpad 102 and the shoulder straps 103 of the backpack 104 to make wearing the backpack comfortable for the user. The pad 105 protects the back and shoulders of the user with the backpack 104 and reduces the fatigue of the user who is burdened with the weight of the backpack 104.

As such, the pad 105 shown in FIG. 2 is provided in each of the backpad 102 and the shoulder straps 103 of the backpack 104. Typically, to impart softness to the pad 105, the pad 105 is made of polyethylene or polyurethane foam, which is called a sponge.

However, because the conventional pad 105, which is used in each of the backpad 102 and the shoulder straps 103 of the backpack 104, is made of a typical elastic member such as a sponge, there are problems of unsatisfactory ventilation and moisture retention. As a result, when the user carries the backpack 104 on his/her back for a long time, the backpad 102 and the shoulder straps 103 become soaked with sweat and, as well, the user's back becomes hot. As such, the backpack 104 is unpleasant to the user who carries the backpack 104 on his/her back. In addition, in the case in which the pad 105 is soaked with sweat, the user tires more quickly due to the increased weight of the backpack 104.

SUMMARY OF THE INVENTION

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a cushion pad for backpacks which is provided in each of a backpad and a shoulder strap of a backpack and is made of a material that is light in weight and has superior ventilation, thus allowing a user to carry the backpack on his/her back more comfortably.

In order to accomplish the above object, the present invention provides a cushion pad for backpacks, including: a net fabric provided on each of a backpad and a shoulder strap of a backpack; a porous filter placed inside the net fabric to dissipate heat to the atmosphere; and a sheet layered on a surface of the porous filter and inserted along with the porous filter into a space defined between the net fabric and the cloth of the backpack. The cushion pad provides ventilation and elasticity to each of the backpad and the shoulder strap of the backpack.

In the present invention, the cushion pad having both the porous filter and the sheet is provided in each of the backpad and the shoulder strap of the backpack. Thus, when the backpack is in close contact with a user's body, the cushion pad efficiently dissipates heat generated from the user's body. Furthermore, the cushion pad has superior ventilation, thus preventing the backpad and the shoulder strap from being soaked with sweat.

As such, the cushion pad having a double layered structure of the porous filter and the sheet improves the function of the backpad and the shoulder strap of the backpack, thus being more convenient to a user. Furthermore, the cushion pad of the present invention is lighter than conventional pads as well as has superior ventilation, thus preventing the backpack from being soaked with sweat, thereby being pleasant to the user who carries the backpack on his/her back.

BRIEF DESCRIPTION OF DRAWINGS

The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a view showing a conventional backpack;

FIG. 2 is a perspective view showing a cushion pad to be inserted into a backpad or shoulder strap of the backpack of FIG. 1;

FIG. 3 is a partially exploded view showing a backpack having a cushion pad according to an embodiment of the present invention;

FIG. 4 is a sectional view taken along the line A-A of FIG. 3; and

FIG. 5 is a perspective view of the cushion pad for backpacks according to the present invention.

DESCRIPTION OF PREFERRED EMBODIMENTS

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

FIG. 3 is a partially exploded view showing a backpack 2 having a cushion pad 1 according to an embodiment of the present invention. FIG. 4 is a sectional view taken along the line A-A of FIG. 3. FIG. 5 is a perspective view of the cushion pad 1 for backpacks according to the present invention. In the cushion pad 1 to be inserted into each of a backpad 3 and shoulder straps 4 of the backpack 2, a net fabric 5 is provided on a portion of each of the backpad 3 and the shoulder straps 4 which are in close contact with the back and shoulder of a user. Furthermore, the cushion pad 1 of the present invention includes a porous filter 6 which is placed inside the net fabric 5 to dissipate heat to the atmosphere, and a sheet 7 which is layered on a surface of the porous filter 6 and inserted along with the porous filter 6 into the space defined between the net fabric 5 and the cloth 8 of the backpack 2. Thus, the cushion pad 1 of the present invention provides superior ventilation and elasticity to the backpad 3 and the shoulder straps 4 of the backpack 2. The sheet 7 may be made of polyurethane. Alternatively, the sheet 7 may be made of another material capable of supporting the porous filter 6 and ensuring the elasticity of the backpad 3 and the shoulder straps 4 of the backpack 2. In other words, the sheet 7 is not limited to a specific material, so long as the material is able to support the porous filter 6 and ensure the elasticity of the backpad 3 and the shoulder straps 4 of the backpack 2.

As such, the cushion pad 1 of the present invention has a double layered structure of the porous filter 6 and the sheet 7 and is inserted into each of the backpad 3 and the shoulder straps 4 of the backpack 2. Here, the cushion pad 1 is shaped in a predetermined shape and inserted between the net fabric 5 and the cloth 8 constituting each of the backpad 3 and the shoulder straps 4. Thus, the cushion pad 1 is characterized in that superior ventilation is ensured by the porous filter 6 which is in contact with the user's body through the net fabric 5.

As shown in FIG. 3, when the cushion pad 1 including both the porous filter 6 and the sheet 7 is provided on the backpad 3 of the backpack 2, heat generated from the user's body is efficiently dissipated to the atmosphere through the porous filter 6 while the backpad 3 is in contact with the user's body. Furthermore, the cushion pad 1 provides superior ventilation to the backpack 2, thus preventing the backpad 3 and the shoulder straps 4 from being soaked with sweat.

As shown in FIG. 4, in the structure of each shoulder strap 4 having the cushion pad 1, the net fabric 5 is disposed inside the shoulder strap 4 which is in contact with the user's body. The porous filter 6, made of a porous fabric, is provided inside the net fabric 5 to dissipate heat through a number of pores provided in the porous filter 6. The sheet 7 is layered on a surface of the porous filter 6 to support the porous filter 6 and have frictional force. The cloth 8 of the backpack 2, which is positioned at a side of the sheet 7, is coupled to the net fabric 5 so that the space is defined between the cloth 8 and the net fabric 5.

As such, in the cushion pad 1 of the present invention inserted into each of the backpad 3 and the shoulder straps 4 of the backpack 2 to provide ventilation and elasticity to the backpad 3 and the shoulder straps 4, as shown in FIG. 5, the porous filter 6 defines a surface of the cushion pad 1, and the sheet 7, made of a material such as polyurethane and having a predetermined thickness, defines the other surface of the cushion pad 1. The porous filter 6 is provided on each position of the backpack 2 at which the user's body is in close contact with the backpack 2. The sheet 7 serves to support the porous filter 6 and provide elasticity to the backpad 3 and the shoulder straps 4.

Furthermore, as required, the porous filter 6 may be varied in density by controlling a foaming rate of a raw material such as polyurethane. In consideration of the manufacturing costs or weight of the backpack 2, the porous filter 6 may be inserted alone into each of the backpad 3 and the shoulder straps 4 of the backpack 2 without the sheet 7. Furthermore, a well-known porous filter normally used in a dust collector may be used as the porous filter 6 of the present invention.

In the present invention, the porous filter 6 of the cushion pad 1 efficiently dissipates heat outside the backpack 2, thus being pleasant to the user when the backpack 2 is in close contact with the user's body. In addition, because the porous filter 6 has superior ventilation, the user is prevented from feeling uncomfortable due to the backpack 2 being soaked with sweat, and the cushion pad 1 is prevented from becoming heavy due to the sweat. Moreover, the cushion pad 1 enhances impact absorbing ability and ventilation performance of the backpad 3 and shoulder straps 4 of the backpack 2, thus ensuring a high-quality product.

As described above, the present invention provides a cushion pad for backpacks which has a double layered structure of a porous filter and a sheet and improves the function of a backpad and the shoulder straps of a backpack, thus being more convenient to a user. Furthermore, the cushion pad of the present invention is lighter than conventional pads and has superior ventilation, thus preventing the backpack from being soaked with sweat, thereby being pleasant to the user who carries the backpack on his/her back. Moreover, the cushion pad has superior impact absorption and ventilation, thus providing a high-quality product.

Although the preferred embodiment of the present invention has been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claim. 

1. A cushion pad for backpacks, comprising: a net fabric provided on each of a backpad and a shoulder strap of a backpack; a porous filter placed inside the net fabric to dissipate heat to the atmosphere; and a sheet layered on a surface of the porous filter and inserted along with the porous filter into a space defined between the net fabric and cloth of the backpack, wherein the cushion pad provides ventilation and elasticity to each of the backpad and the shoulder strap of the backpack. 